Peptide bond formation is catalyzed by the enzymatic activity of an RNA molecule
A. true B. false
Answer : A
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What is the sequence of events in a typical eukaryotic cell cycle?
A. G1 to G2 to S to mitosis to cytokinesis B. G1 to S to G2 to mitosis to cytokinesis C. G1 to S to G2 to cytokinesis to mitosis D. G1 to G2 to mitosis to S to cytokinesis E. S to G1 to G2 to mitosis to cytokinesis
Glucose dissolves in water because it
a. ionizes. b. is a polysaccharide. c. is a polar and forms many hydrogen bonds with water molecules. d. has a very reactive primary structure. e. is an isotope
When does a zygote become a multicellular creature?
a. at fertilization b. when cleavage begins c. when organs begin to form d. when the heart begins beating e. at birth
Why are the proteins being separated on an SDS polyacrylamide gel attracted equally to the positive electrode?
a) they all have the same degree of hydrophobicity b) they carry a relatively uniform negative charge distribution c) they are all the same molecular weight d) they are all the same size e) they carry a relatively uniform positive charge distribution